Sealing device



Aug. 6, 1957 c. FUNKE SEALING DEVICE Filed May 25, 1955 Il 2. E 2 ,9 M F a United States Patent O 2,801,450 vSEALING DEVICE Carl Funke, SlottsbronySrwedeu "Application May 25, 1953, Serial No. 357,174 '12 Claims. (Cl.`20`69) "This invention relates to Aanimproved sealing device of the type in which the seal is effected by a-strip vof -elastic material between two bodies, for instance, vbe- `tween a window-arch and-window-frame4 or "between a 'door'and door-case.

In sealing devices of this type as commonly made, the

ysealingl strip has a fixing or'securing partV by `which it is xed to oneA of the-two bodies-(hereinafter called the base) and `also has 'a sealing part which engages or "tightens against the other vbody (fhereinaftercalledthe "-abutment). The fixing :part ofthe strip preferably expands in cross-section in a direction-away from the sealing part, so that when the fixing part of-su`cha strip 'is fitted into a notch with thesame cross-section as-that ofthe fixing part, the strip is secured in the notch vagainstfremoval in any way other than bylbeing pulled length- `wise. Such sealing devices are disclosed, for example, in :United States Patents Nos. 1,363,354 and 2,132,060.

The notch which receives thefstrip in the base must lfgenerallybe made with a profile, cutter. Asy the stripsV "are kusually quite thin, the profile cuttingtools must be tsrnall, .withfthe result that the` cutting capacityf'issmall feven if high-speed tools are used. -Furthermore, fa rough surface of the notch can hardlyl be avoided. Itiis seldom Athatthe material isso homogeneous: and` the guidingof the tool-so absolutely perfect, that the irregularities in `the hardness and structure of the material will' have no .adverse effect .in the cutting of the notch. Thus, the

notch will bexeither too large or too small in section, in

addition to4 having a surface roughened lby the cuts. If

the notch is too large in section, the strip will not be secured adequately; and too small la section of the notch, together with kthe uneven surface, may cause difliculties in inserting the strip. .Y

According to the present invention, -which `overcomes these disadvantages, the sealing deviceincludes a-bear .ing member in whichthe xing. part of the strip is inserted. This bearing member, usually in the form of a lath'having a notch profile, is preferably made by draw- ;ing, extruding or similarly working the material from lwhich it` is made, so that metal alloys, plastics, or the like, can be used. A lath manufactured in thisway can lbe Vrnadewith a very `exact cross-section and la smooth surface, even inthe notch. The elastic strip is also pref- ;erably made by drawing, extrusion, rolling, or the like,

whereby `it will have exact dimensions and a very` smooth surface. Thus,the strip can be made to fit preciselyV into the notch. Due tocthesmooth surfaces of: thefnotch and the strip, the latter can easily be fitted into the notch or` removed lengthwise; andV due to `the exact dimensions, the-strip Vis safely secured in the notch against outward forces `perpendicular-to the notch. Leakage between the stripV and 4thebearing member is eliminated.

t, The bearingcmember `can be xed to the base either `by being fitted intoa groove inthe base or by being fas- 2,801,450 :Patented Aug. 6, 19,57

ice

` l 2 form rof'the invention, showing the sealing strip and bearing member applied to a base;

Fig."2 is a view similar to Fig. 1 but showing the Strip insealing position against an abutment;

*Figs V3 andv4; are views similar to Fig. 1 but showing different forms ofthe strip and bearing member;

Figs. 5, 6 and 7 are detailperspectve views ofthe bearing membersshown in Figs. 1.2, Fig. 3 and Fig.-4, respectively;

Fig. 48-is a'sectional view of another embodiment of the device, in which the bearing member is nailed to the surface of the base, and

Figs. 9 `and 10 areisectional yviews of modied forms of the'device shown inV Fig. 8.

InFigs. I1-4,fthe reference numeral 1 indicates a part of a base, for example, a window-frame or adoor edge, having a longitudinal groove 2 of rectangular cross-section. f Intothis groove aV bearing member 3, in the form of aproiiledlath, 4is kpressed or'otherwise suitably fastened. The lath 3 (Fig. 5) has a longitudinal notch 4 of lcircular Vcross-section which, through a rather narrow or4 constricted passaget, opens upwardly into a recessed portion-formedfatthestop of the lath bythe sloping surfacesf'l6. The elastic strip 7 (Fig. 1) has a fixing part-8 o`f round=crosssection from -whichl extendsr aV sealing Vpart m9 shown 4as I'being wedge-shaped `in cross-section, although-it can lbe-oflany-,other suitable shape. The fixing `part-8 'is closely received in the notch 4, and the sealing part'f9 passes-through the notch passage 5 and the recess 6fand jutsbeyond 'the grooved surface of the base 1.

@When thefbase '11moves towardfthe abutment10 (or :the abutment .'.moves'toward the base), the sealing 'part .9 of. tl1e:strip74 is pressed against the abutment to effect the sealing, as shown in Fig. 2. The motion between the `basel and the abutment `1t) may be perpendicular or paralleltztotheir opposing surfaces, orv partly perpendicularfand partly parallel.

The device shown in Figs. 3 and -6 Vdiffers fromthat xdescr'ibed'above in that `the shape of thenot'ch `4a in the bearingimember f3, and the fixing part 8a of the strip 7,--is -1 triangular, `Withethenotch in the bearing member expand-ingain `the direction fromthe passage 5.

`Int-Figs. 4 and'7; the wfixingpart 8b ofthe strip7 and the-notch 4b in the bearer 3 ,are V-shaped.

The details of the devices shown in Figs. 17 canbe varied. For/example,thensealing part 9 of the strip 7 Vcan `be round in cross-section-and either solid or tubular, or -it canfbe V-shaped or of some other configuration.

4Thebearingmember 13 can be -of any suitable shape in cross-section, such as dove-tailed, V-shaped, etc.

.The lath 3 does not` have to extend to'the top .ofthe groove-.2, but Vmay terminate -somewhat below theggrooved surface of member 1. In that case it is not necessary that the-lath4 3 be-providedwith Va recess 6, asthis serves mainly asa hollow for the sealing part ofthe strip when deformed by sealing.

As shown in Fig. 8, the lath 3c is placed on `the surface 11of the basel. The lath has a notch forthe fixing part-8c of a strip 7. The passage leading to the notchv coincides with the vertical surface of the lath, as shown in the drawing. The space between the lath 3c and Athe surface 16 of the abutment'ltl hasl the same function ,as the recessi in the embodiment shown in Figs. 1-7. The part of the lath resting against the Vsurface 11 is 4hollow or recessed,4 as shown at'12, to allow a packing 13 between the lath 3c and the'base 1. The lath can be .fastened to the base by nails 14. If the lath is-of a soft metal,` plastic, or the like, and the nails are sufficiently hard and stiff, for instance Iof steel, the lnails can be.` driven through the lath without drilling beforehand. In Fig. 8, the abutment 10 is shown with a shoulder 15, against which the basel can rest.

The embodiment in Fig. 9 differs from that in Fig. 8 mainly by the use of a second strip 71, similar to the strip 7, inserted into a second notch in the lath, the strip 71 taking the place of the packing 13 for sealing against the base 1. In Fig. 9, the lath 3d is'sh'ownffaste'ne'd tothe base by screws 14a, the heads of which are counter sunk in the lath. u

The embodiment shown in Fig. differs from that of Fig. 9 principally in that the lath-3c is ofsymmetrical section. The recess 121 is similar to the recess 12, the sealing vstrip 7 passing through the recess 121, and the packing strip 71 passing through the recess 12. The packing strip 71 can be nailed in place, as shown at'14 in Fig. 10. l

It would, of course, be possible to use laths made of rolled metal strips, instead of drawn or extruded ones. However, it is not presently possibleto obtain the same precision by rolling or bending as by drawing, extrusion, or the like. In the following claims, the words extruded lath are intended to denote any lath made by forcing the material, in more or less plastic condition, through a die, or the like, as in an extruding or drawing operation.

I claim:

l. In combination with two relatively movable bodies constituting a base and an abutment, a device for sealing a space between said bodies, which comprises an elastic sealing strip having a fixing part and a sealing part, the sealing part having a cross-section which tapers from said fixing part and being adapted for sealing engagement with the abutment, and a separate bearing member secured to the base and having a notch in whichsaid fixing part of the strip is held, said sealing strip and notch being symmetrical in cross-section and the notch having sides closely engaging said fixing part and also having oppositely slanting sides converging toward said fixing part and said first sides to define a central slit at the junction of said fixing and sealing parts.

2. I'he combination according to claim l, wherein the bearing member isan extruded lath in which the crosssection of said notch matches the cross-section of said fixing part of the strip.

3. The combination according to claim 1, wherein the bearing member is an extruded lath in which the crosssection of said notch matches the cross-sectionr off said fixing part of the strip, the notch cross-section expanding in a direction away from said sealing part, thereby locking the strip in the notch against forces perpendicular to the strip. Y

4. The combination according to claim 1, wherein the bearing member is an extruded lath in which the cross-section of said notch matches the cross-section of said fixing part of the strip, the bearing member being polygonal in cross-section.

5. The combination according to claim 1, in which said base is grooved, the bearing member being fitted in the base groove.

6. The combination,'according to claim 1, in which said base is grooved, the bearing member being fitted in the base groove and forming therein a recess for said sealing part of the strip.

7. In combination with two relatively movable bodies constituting a base and an abutment, a device for sealing a space between said bodies, which comprises an elastic sealing strip having a fixing part and a sealing part, the sealing part being adapted for sealing engagement with the abutment, and a separate bearing member secured to the base and having a notch in which said fixing part of the strip is held, the bearing member having two surfaces substantially perpendicular to each other, said notch being disposed in one ofthe surfaces and the other surface being fixed to the base, said last surface having la recess and a packing member located in said last recess between the bearing member and the base.

8. The combination according toV claim v7, -in which said packing member is asecond elastic strip held in a second notch in said bearing member and in sealing engagement with the base.

9. The combination according to claim 7, in which the bearing member is symmetrical in cross section.

10. In combination with two relatively movable bodies constituting a base and an abutment, a device for sealing a space between said bodies, which comprises an elastic sealing strip having a fixing part anda sealing part, the sealing part having a cross-section which tapers from said fixing part and being adapted for sealing engagement with the abutment, and a separate bearing mem- `ber ,secured'tothelbase and having a notch in which said xing part of the strip is held, said sealing strip and notch being symmetrical in cross-section and the notch having sides lclosely engaging said fixing part and also having oppositely slanting sides converging toward said fixing part and said first sides to define a central slit at the junction of said fixing and sealing parts, the bearing member having two surfaces substantially perpendicular to each other, said notch being disposed in one of the surfaces and the other surface being fixed to the base, said last surface having a recess, and a packing member located insaid last recess between the bearing member and the base.

l1. In combination with two relatively movable bodies constituting a base and an abutment, a device for sealing a space between said bodies, which comprises an elastic sealing strip having a fixing part and a sealing part, the sealing part having a cross-section which tapers from saidyxing part and being adapted for sealing engagement with the abutment, and a separate bearing membersecured to the base and having a notch in which said fixing part of the strip is'held, said sealing strip and notch being symmetrical in cross-section and the notch having sides closely engaging said fixing part and also having oppositely slanting sides converging toward said fixing part and said first sides to define a central slit at the junction of said fixing and sealing parts, thebearing member having two surfaces substantially perpendicular to each other, said notch being disposed in one of the surfaces and the other surface being fixed to the base, said last surface having a second notch, and a second elastic strip held in said second notch and in sealing engagement with the base.

l2. In combination with two relatively movable bodies constituting a base and an abutment, a device for sealing a space between said bodies, which comprises an elastic sealing strip having a fixing part and a sealing part, the sealing part having a cross-section which tapers from said fixing part and being adapted for sealing engagement with the abutment, and a separate bearing member secured to the base and having a notch in which said fixing part of the strip is held, said sealing strip and notch being symmetrical in cross-section and the notch having sides closely engaging said fixing part and also having oppositely slanting sides converging toward said fixing part and said first sides to define a central slit at the junction of said fixing and sealing parts, the bearing member having two surfaces substantially perpendicular to each other, said notch being disposed in one of the surfaces and the other surface being fixed to the base, said last surface having a second notch, and a second elastic strip held in said second notch and in sealing engagement with the base, the bearing member being symmetrical in cross-section.

References Cited in the file of this patent UNITED STATES PATENTS 818,764 Hull Apr. 24, 1906 1,337,394 Dillingham Apr. 20, 1920 1,383,191 Dillingham June 28, 1921 1,735,048 Lasker Nov. 12, 1929 1,965,014 Trautvetter July 3, 1934 

